Whatever you have planned this evening, I suggest you clear some time in your busy schedule to play a little Tupsu. What is Tupsu? It's a physics-based puzzler that you can play on your Android device, and you can leave the (Google) wallet in your (virtual) pocket – Tupsu is totally free.
Tupsu (the thing, not the game) is a furry little ball with sticky eyes on long flexible stalks. This title has a World of Goo style of gameplay. You have to drag the sticky eyes over to platforms, where the elastic action will pull the creature along.